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Please, i want to back to the originakl firm. I downloaded in oficial webpage (https://drive.google.com/file/d/1x-EjjH6DxtDdhjlqKO2iIw4Cc0qam89K/view) but the extension file is ZW. there is another file named: loader_zwlf_SPI.bin.
I dont know how to restore it .... please can you help me??